The 60-year-old matriarch took to Instagram with a sweet collage dedicated to Kourtney Kardashian's ex on his special day. She lovingly penned:

"Happy Birthday Scott!! Thank you for being a loving and devoted father to my beautiful grandkids. I am so blessed to be able to call you my son. I love you and hope you have the most amazing day! @letthelordbewithyou#love #family #proudmama#happybirthdayscott"

"My metabolism actually changed like crazy this year. I have Hashimoto's disease. It's a thyroid disease, and it's now been two years since taking the medication for it, so for the VS show I didn't want to lose any more weight, I just want to have muscles in the right place, and if my butt can get a little perkier, then that's good."